Gamma radiation was used to study its effects on the growth and photosynthetic pigments of black gram plants. Different doses of gamma rays were tested on the seeds, resulting in changes in plant height, weight, and pigment levels. Chlorophyll levels decreased, while carotenoid levels increased with higher doses of radiation. The damage to chlorophyll caused changes in leaf color, with yellowish and light green colors observed at different doses. The study showed that gamma radiation can inhibit plant growth and damage photosynthetic pigments, with the effects depending on the dose of radiation.